1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <net/if.h>
#include <linux/if_addrlabel.h>
#include "alloc-util.h"
#include "netlink-util.h"
#include "networkd-address-label.h"
#include "networkd-link.h"
#include "networkd-manager.h"
#include "networkd-network.h"
#include "parse-util.h"
AddressLabel *address_label_free(AddressLabel *label) {
if (!label)
return NULL;
if (label->network) {
assert(label->section);
hashmap_remove(label->network->address_labels_by_section, label->section);
}
network_config_section_free(label->section);
return mfree(label);
}
DEFINE_NETWORK_SECTION_FUNCTIONS(AddressLabel, address_label_free);
static int address_label_new_static(Network *network, const char *filename, unsigned section_line, AddressLabel **ret) {
_cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
_cleanup_(address_label_freep) AddressLabel *label = NULL;
int r;
assert(network);
assert(ret);
assert(filename);
assert(section_line > 0);
r = network_config_section_new(filename, section_line, &n);
if (r < 0)
return r;
label = hashmap_get(network->address_labels_by_section, n);
if (label) {
*ret = TAKE_PTR(label);
return 0;
}
label = new(AddressLabel, 1);
if (!label)
return -ENOMEM;
*label = (AddressLabel) {
.network = network,
.section = TAKE_PTR(n),
};
r = hashmap_ensure_allocated(&network->address_labels_by_section, &network_config_hash_ops);
if (r < 0)
return r;
r = hashmap_put(network->address_labels_by_section, label->section, label);
if (r < 0)
return r;
*ret = TAKE_PTR(label);
return 0;
}
static int address_label_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
int r;
assert(rtnl);
assert(m);
assert(link);
assert(link->ifname);
assert(link->address_label_messages > 0);
link->address_label_messages--;
if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
r = sd_netlink_message_get_errno(m);
if (r < 0 && r != -EEXIST) {
log_link_message_warning_errno(link, m, r, "Could not set address label");
link_enter_failed(link);
return 1;
} else if (r >= 0)
(void) manager_rtnl_process_address(rtnl, m, link->manager);
if (link->address_label_messages == 0)
log_link_debug(link, "Addresses label set");
return 1;
}
static int address_label_configure(AddressLabel *label, Link *link) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(label);
assert(link);
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
r = sd_rtnl_message_new_addrlabel(link->manager->rtnl, &req, RTM_NEWADDRLABEL,
link->ifindex, AF_INET6);
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate RTM_NEWADDR message: %m");
r = sd_rtnl_message_addrlabel_set_prefixlen(req, label->prefixlen);
if (r < 0)
return log_link_error_errno(link, r, "Could not set prefixlen: %m");
r = sd_netlink_message_append_u32(req, IFAL_LABEL, label->label);
if (r < 0)
return log_link_error_errno(link, r, "Could not append IFAL_LABEL attribute: %m");
r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &label->in_addr.in6);
if (r < 0)
return log_link_error_errno(link, r, "Could not append IFA_ADDRESS attribute: %m");
r = netlink_call_async(link->manager->rtnl, NULL, req,
address_label_handler,
link_netlink_destroy_callback, link);
if (r < 0)
return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
int link_set_address_labels(Link *link) {
AddressLabel *label;
int r;
assert(link);
assert(link->network);
HASHMAP_FOREACH(label, link->network->address_labels_by_section) {
r = address_label_configure(label, link);
if (r < 0)
return log_link_warning_errno(link, r, "Could not set address label: %m");
link->address_label_messages++;
}
return 0;
}
void network_drop_invalid_address_labels(Network *network) {
AddressLabel *label;
assert(network);
HASHMAP_FOREACH(label, network->address_labels_by_section)
if (section_is_invalid(label->section))
address_label_free(label);
}
int config_parse_address_label_prefix(const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
_cleanup_(address_label_free_or_set_invalidp) AddressLabel *n = NULL;
Network *network = userdata;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = address_label_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = in_addr_prefix_from_string(rvalue, AF_INET6, &n->in_addr, &n->prefixlen);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Address label is invalid, ignoring assignment: %s", rvalue);
return 0;
}
n = NULL;
return 0;
}
int config_parse_address_label(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
_cleanup_(address_label_free_or_set_invalidp) AddressLabel *n = NULL;
Network *network = userdata;
uint32_t k;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = address_label_new_static(network, filename, section_line, &n);
if (r < 0)
return log_oom();
r = safe_atou32(rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse address label, ignoring: %s", rvalue);
return 0;
}
if (k == 0xffffffffUL) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Address label is invalid, ignoring: %s", rvalue);
return 0;
}
n->label = k;
n = NULL;
return 0;
}
|
